Skip to content
yararules.org
Menu

YARA · ditekSHen detection

DITEKSHEN_MALWARE_Linux_Xorddos

Detects XORDDoS

MalwareXorddosditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekSHen
Date
2020-11-06
Modified
2024-11-01
Score / Quality
75 / 75

What this rule detects

Detects XORDDoS

Associated malware family: Xorddos.

Targets: Linux ELF.

It defines 4 patterns (4 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-linux-xorddos.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Linux_Xorddos : FILE
{
	meta:
		description = "Detects XORDDoS"
		author = "ditekSHen"
		id = "0ca581c3-bce2-5b4f-8146-9aeb49b88813"
		date = "2020-11-06"
		modified = "2024-11-01"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/malware.yar#L2209-L2220"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "192378d903316c1d80b064e78feb6ed9d2ffc9e6c7dc0c8df223d83d17e4e8d9"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "for i in `cat /proc/net/dev|grep :|awk -F: {'print $1'}`; do ifconfig $i up& done" fullword ascii
		$s2 = "cp /lib/libudev.so /lib/libudev.so.6" fullword ascii
		$s3 = "sed -i '/\\/etc\\/cron.hourly\\/gcc.sh/d' /etc/crontab && echo '*/3 * * * * root /etc/cron.hourly/gcc.sh' >> /etc/crontab" fullword ascii
		$s4 = "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; TencentTraveler ; .NET CLR 1.1.4322)" fullword ascii

	condition:
		uint32( 0 ) == 0x464c457f and 3 of them
}

Strings (4 patterns)

IdentifierTypeValueModifiers
$s1text"for i in `cat /proc/net/dev|grep :|awk -F: {'print $1'}`; do ifconfig $i up& done"fullword ascii
$s2text"cp /lib/libudev.so /lib/libudev.so.6"fullword ascii
$s3text"sed -i '/\\/etc\\/cron.hourly\\/gcc.sh/d' /etc/crontab && echo '*/3 * * * * root /etc/cron.hourly/gcc.sh' >> /etc/crontab"fullword ascii
$s4text"User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; TencentTraveler ; .NET CLR 1.1.4322)"fullword ascii

Condition

uint32( 0 ) == 0x464c457f and 3 of them

In plain words (Heuristic)

  • The file must start with the ELF header — a Linux/Unix executable.
  • At least 3 patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

References

Licence & attribution

Author: ditekSHen

Source repository: ditekSHen detection @ e76c93dcde

Licence: BSD 2-Clause License (repository licence)

Copyright notice: Copyright 2021 by ditekSHen (https://github.com/ditekshen/detection).

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: 0ca581c3-bce2-5b4f-8146-9aeb49b88813

Tags:FILE

Related rules